Casement-window.



H. D. HOPE.

CASEMENT WINDOW.

APPLICATION FILED MAR. 23. 1911.

2 SHEETS-S Patented Apr. 16, 1918.

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CASEMENT WINDOW.

APPLICATION FILED MAR.23.1917.

Patented Apr. 16, 1918.

2 SHEETS-SHEET 2.

HENRY DONALD HOPE, 0F BIRMINGHAM, ENGLAND.

CASEMENT-WINDOW.

Specification of Letters Patent.

Patented Apr. 16, 1918.

Application led March 23, 1917. Serial No. 157,053.

To all whom t may concern:

Be it known that I, HENRY DoNAtLuI-Iorn, a subject of the Kin of Great Britain and Ireland, residing at iimingham, England, have invented certain new and useful I mprovements in Casement-Windows, of which the following-is a clear,'full, and exact description.

This invention relates to easement windows, and an object of the invention is to provide a tight, strong, compact and n eat appearing double easement window having independently swinging sashes.

More particularly the invention aims to provide a double easement window in which the parts are so nested, or otherwise arranged, that the structure will require little, if any, more space than the ordinary single easement structure.

An important feature of the invention is the novel hinge construction by which each sash of the double easement window is supported to swing independently abouta common pintle, and which nevertheless gives the appearance of an ordinary hinge when the window is in its closed position. v

A further important feature of the inven tion is the novel construction involving the simple and compact attachment of the aforementioned hinge to the abutting flanges of metal easements.

Other objects and important features of the invention will appear from the following description and claims when considered in connection with the accompanying drawings, in which- Figure 1 is a front elevation of a double easement window embodying the present invention;

Fig. 2 is a section on the line 2 2 of Fig. 1;

i-Fig. 3 is a section on the line 3-3 of Fig. 1;

Fig. 4 is a section similar to Fig. '3, showin the parts in a partly opened condition;

Fig. 5 is a perspective detail also showing the parts in a partly opened position;

Fig. 6 is a perspective detail showing the part of the hinge attached to the wlndow frame; and

Fig. 7 is a perspective detail showing the inner face of the outer hinge leaf.

In the illustrated construction, the window frame 2 is preferably formed of a metal channel of the section shown in Fig. 2, this channel having upon one side a flange 4 which serves as a stop for the easement sash 6, and having upon its other side a shorter liange 8 against which the easement flange 10 abuts, the easement sash 6 being of L- shaped section as shown. The glass 12 of the sash 6 is preferably mounted in the side of the sash adjacent to the flange4 Vof the frame 2,'being confined in said sash between metal angles strips or fillets 14 and an inwardly directed flange 16 upon said sash 6.

The strips or fillets 14 are preferably made in angular cross section to provide a larger recess in the sash 6 for the reception of the second sash 18, having a flange 20 overlapping and abutting the flange 10 of the sash 6, which flange 10 extends in the plane of said sash 6 on the outer edge of said sash. Said flange will thus overlap the sash 6 just outside the plane of said frame. The glass 22 of the sash 18 is shown as confined between an inwardly directed liange 24 upon the sash 18 and a strip or fillet 26.

From the foregoing description it will be seen that when the parts are in the position shown in Fig. 2, a closed air space is provided between the panes'12 and 22, which serves as insulation.

As hereinabove suggested, an important feature of the invention is the novel hinge construction by which the separate sashes are supported to swing about a common pintle. This hinge comprises a leaf 28 attached to the frame 2 in the manner shown in Figs. 2, 3 and 4 of the drawings, the leaf 28 passing through a slot in the stiifening iange 30 of the frame 2 and being connected by a screw 32 to the web of the frame channel. The leaf 28 is provided with three knuckles 34 having openings 86, in which is received the pintle 38 of the hinge, and these knuckles 34 are spaced to interlock With two knuckles 40 upon a second leaf 42 connected to the flange 10 ofthe sash 6, as shown in Figs. 3, 4 and 5. The knuckles 44 on the leaf 46, connected to the flange 20 of the sash 18, embrace the outer knuckles of the leaf 28 and thus, when the pintle 38 is passed through all of the knuckles, the said knuckles are maintained in their interlocked relation.l It will be observed that the pintle 30 is lo cated adjacent the edges of the flanges 10 `and 20.

It will be noted that the leaf 42 of the hinge is attached to the outer face of the flange 10 of the sash 6, and since the inner face of the fiange 20 of the sash 18 abuts against the said outer face of the flange 10, a recess 48 is provided in the Hange 20 to receive the leaf 42 of the hinge, and a recess 50 is also provided in the inner face of the leaf 46, the leaf 46 entirely covering the leaf 42 when the window is in the closed condition shown in Fig. 2 because both leaves swing in the same plane.

It will be obvious that the invention is equally applicable to outwardly opening casements and to inwardly opening casements, and from the drawings and the fore-- goin description it will be seen that the doubgle easement structure of the present inl5 vention requires little if any more space than the ordinary single easement structure and that when in its closed condition, its

appearance is substantially'that of a single easement since the hinges haveJ every appearance of an ordinary hinge.

What I claim as new is 1. In a easement window, the combination with a frame, of a window sash of a size adapted to nest in and to swing into said frame, said sash having a flange eX- tending beyond its outer` edge and abutting the sides of said frame, and said Hange overlapping said frame just outside the plane of said frame, and a second window sash of a size adapted to nest in and to swing into said first sash, and having a Hange overlapping and abutting the said first Hange.

2. In a easement window, the combina-.

tion with a frame, of a window sash adapted to swing into said frame and having a Hange overlapping and abutting the sides of said frame, a second window sash of a size adapted to nest in and to swing into said first sash and having a Hange overlapping and closely abuttting the said Hrst Hange, and

a hinge having a. leaf connected to said frame and separate leaves, one of them connected to the flange of each of said sashes, the

Hange of the second sash being provided with a recess to receive that leaf of said hinge which is attached 'to the first sash.

3. In a Casement window, the combination with a frame and a plurality of sashes arranged to swing individually into nested relation in said frame, of a hinge having a leaf for each of said sashcs, said leaves having interlocking knuckles and a common pintle, and the outermost leaf being arranged to swing in the same plane as that in which the intermediate leaf part of the hinge swings, so as to form a cover for said intermediate part.

4. In a cascment window, the combination with a frame having an inwardly dircctcd flange upon one side, of a window sash adapted to swing from the other side into said frame into abutting relation to said Hange and having a Hange extending 85 beyond its outer edge, said Hange abutting Lacasse the other side of said frame and overlapping said frame just outside of its said other side, and a second window sash arranged to swing into said first sash and having a Hange overlapping and abutting the said first Hange.

5.*In a easement window, the combination with a frame having an inwardly directed Hange upon one side, of a window sash adapted to swing from the other side into said frame into abutting relation to said Hange and having a flange extending beyond its outer edge said flange abutting the other side of said frame and overlapping said frame just outside of its said other side, a second window sash arranged to swing into said Hrst sash and having a flange extending beyond the outer edge of said second sash and overlapping and abutting the said first Hange, and a hinge for said sashes having a common pintle and having a separate leaf for each sash and for the frame, said sash leaves being secured to the said Hanges of said sashes and provided with interlocking knuckles mounted upon said pintle.

6. In a easement window, the combination with a frame, of a window sash adapted to swing into said frame and having a flange overlapping and abutting the sides of said frame, a second window sash arranged to swing into said first sash and having a Hange overlapping and abutting the ysides of said first sash, and a hinge for said sashcs comprising a leaf for each sash and a leaf 100 for the frame having a common pintle, said sash leaves being attached to the outer faces of the respective sash Hanges, and the outer Hange having a recess to receive the inner hinge leaf, and the outer hinge leaf being 105 arranged to cover said recess and said inner hinge leaf.

7. In'a easement window, the combination with a frame, of a window sash adapted to swing into said frame and having a flange 110 overlapping and abutting the sides of said frame, a second window sash arranged to swing into said first sash and having a Hange overlapping and abutting the sides l of said first sash, and a hinge for said window having a leaf for each of said sashcs and a leaf for said frame mounted upon a common pintle, said pintle being adjacent the edges of said flanges, and the leaf for the inner sash being mounted upon the outer surface of said sash Hange and the lcaf for the outer sash being mounted upon its said Hange and arranged to cover said leaf for the inner sash.

8. In a easement window, the combination with a frame, a window sash adapted to swing into said frame and having a Hange extending beyond the outer edge of said sash and overlapping and abutting the sides of said frame, a pane of glass mounted in 13 said sash near the side remote from said to provide an air 'space between said winiiange, a second window sash arranged to dows when inclosed condition. swing into said first sash and havinga ange Signed at Birmingham, England, this 10 overlapp g and abutting the sides of sald 28th day of February, 1917.

5 first sash, and a ane o glass in said secy HENRY DONALD HOPE? ond sash mounte near the side thereof Witness: which is also remote from said first; ange, ERNEST HAimER. 

